Hansen
Hansen is a SWAT member who appears in Season Four episode "Fourth Grade".
Background
In an attempt to travel back to third grade, the boys seek help from the Star Trek Nerds to build a time travelling device onto Timmy Burch's wheelchair, but the plan backfired when the device went out of control, causing Timmy's wheelchair to speed up. Knowing that the device would explode if the wheelchair slows down, a SWAT helicopter was deployed with Hansen attempting to disable the device, only to have accidentally carried a woman on board. Despite the difficulties, Hansen managed to fix the device at the last few seconds, creating a time portal as designed, but sending Timmy back to pre-history.
Appearance
Hansen appears to have brown hair, and wears the SWAT uniform with black headgear and harness.